水下钻孔爆破堵塞长度的数值模拟研究

Numerical Simulation of Stemming Length in Underwater Drilling and Blasting

结合长江太子矶航道炸礁工程,根据国内外水下钻孔爆破参数的经验公式,初步确定了该水下破工程的堵塞长度。运用ANSYS/LS-DYNA软件,通过对不同堵塞长度参数的优化调整,对比分析得出了最佳的堵塞长度为140 cm左右,与经验公式所给范围相同。以该值配合其他经验参数通过在现场试验验证发现,爆破效果较好,取得了预期的效果。

Combined with the reef blasting project in Taiziji Route and according to the empirical formula for calculating the stemming length for underwater drilling and blasting,this paper determined the initial value of the stemming length.Then the ANSYS/LS-DYNA was applied to simulate the process of the underwater blasting to get the optimum value,through the adjustment of different design parameters.